11971411 has 2 divisors, whose sum is σ = 11971412. Its totient is φ = 11971410.

The previous prime is 11971409. The next prime is 11971439. The reversal of 11971411 is 11417911.

It is a weak prime.

It is an emirp because it is prime and its reverse (11417911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11971411 - 2¹ = 11971409 is a prime.

Together with 11971409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11971711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5985705 + 5985706.

It is an arithmetic number, because the mean of its divisors is an integer number (5985706).

Almost surely, 2^11971411 is an apocalyptic number.

11971411 is a deficient number, since it is larger than the sum of its proper divisors (1).

11971411 is an equidigital number, since it uses as much as digits as its factorization.

11971411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 25.

The square root of 11971411 is about 3459.9726877535. The cubic root of 11971411 is about 228.7608915156.

The spelling of 11971411 in words is "eleven million, nine hundred seventy-one thousand, four hundred eleven".